function circleFun(r){
    function circumference(r){
        console.log(3.14 * 2 * r);
    }
    function area(r){
        console.log(3.14 * r * r);
    }
    return {
        circumference:circumference(r),        
        area:area(r)
    }
}
module.exports = circleFun;